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Finding the Fourth Proportional to 15,673.68, 21,631.08 and 8,601.48

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Solution

The fourth proportional to 15,673.68, 21,631.08 and 8,601.48 is: 11,870.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,673.68 : 21,631.08 = 8,601.48 : x
  2. Step 2: Convert to fraction form
    15,673.68/21,631.08 = 8,601.48/x
  3. Step 3: Cross multiply
    15,673.68x = 21,631.08 × 8,601.48
  4. Step 4: Simplify right side
    15,673.68x = 186,059,302.00
  5. Step 5: Solve for x
    x = 186,059,302.00/15,673.68
  6. Step 6: Final answer
    x = 11,870.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.